Norbert is looking at his finger tip as it approaches and eventually touches his nose. What Norbert is doing is a demonstration of __________

A) binocular disparity.
B) convergence.
C) closure.
D) interposition.

Binocular Disparity

The difference in the visual images that each eye perceives because of the eyes’ horizontal separation; the basis of stereoscopic vision.

Convergence

A term that refers to the coming together of two or more things; in a physiological context, it describes the inward movement of the eyes toward each other when focusing on a close object.

Closure

The psychological tendency to seek a coherent and logical ending to an open issue or incomplete task.